Abstract
Functional ambulation occurred in 22 of 36 severely affected arthrogrypotic patients. Functional ambulation in these patients required hip motion to within 30 degrees of full extension and knee motion to within 20 degrees of full extension. Ambulation also required hip extensor strength of good (grade 4), quadriceps strength of fair (grade 3), or crutchable upper extremities and orthotic substitutes. Foot and spine deformities also interfered with ambulatory ability.
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